Friction draft-rigging.



J. F. O'CONNOR.

FRICTION DRAFT RIGGING. APPLICATION FILED JULY 24, 19H.

1,151,379. v Patented Aug 24,1915.

Q 2 SHEETS--SHEET J. F. OCONNOR.

' FRICTION DRAFT RIGGING. APPLICATION FI'LED IUD/24,1911.

Patented Aug. 24, 1915.

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Fig 5 til-start a JOHN F. OCONNOB, QF cisrcsso, rumors, assist-son H.MENER,.13F

csrcseo, initiators.

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Specification of Letters ratcnt.

To all whom it may concern Be it known that I, JOH'N F. OCoNNon, acitizen of the United States, residing in Chicago, in the county of Cookand State of Illinois, have invented a new and useful I Improvement inFriction Drafhfiigging, of

7 tally extending rod, and said wedges furthermore having stops on theirinner ends which are adapted to pass by the supporting rod to limit theinward movement of the wedges and to take. the shock ofi of the bolt andthe springs; r

My invention consists in the novel parts and devices and in the novelcombinations of parts and devices herein shown, described and claimed.

in the accompanying drawing forming a part of this specification, Figure1 is an elevation partly in vertical, cross section, of a deviceembodying my invention. Fig. 2 is a plan view of the same, partly inhorizontal, longitudinal section. 3 is a transverse, vertical sectiontaken on the line 3-3 of. Fig. 1. Fig. 4 is an end view of oneof thewedge blocks. Fig. 5 is a view similar to Fig. 2,

showing another form of my invention, and

- Fig. 6 is a side view of the wedge used in-the structure shown in Fig.5. g

lnthe drawing, 10, 10 are the center S1llS,

provided with the front stops 11 and the lowers 18719, respectively,having preferably rear stops 12. Slidably mounted between these centersills and supported therein by the saddle plate 13,- removably attachedthereto by bolts M, is the yoke '15, rigidly connected to the draw-bar16 by means of fastening devices, such as the rivets 1'3, 17.) Withinthe yoke are the front and rear folremovably attached to their innerfaces,

wedges '20. These wedges are each provided with inclined or wedgingfaces 21, and a 0y.- lindrical, horizontally extending recess '22 attheir'inner ends. The upper and lower horizonally projecting portions 23formed by this recessfare adapted to. pass by the transversely extendingb01t'24, and said projec' wedges.

ed on tions 23 are so constructed that they contact upon an extremeinward movement of the wedges and thus take the shock oil of the boltand limit the inward movement of the The belt at which extendstransversely through slots in the center sills 1O Aug. 2%, i915.

has at each end thereof an adjustable nut 26 and on the central portionoi the rod 24 "are slida'bly mounted oppositely disposed trio-- tionshoes or blocks 27, having inclined or 28 contacting the friction faces21 of the wedges 20. These friction shoes or blocks 27 are maintained intheir inward position by means of springs 29 mounte rod 2%, and betweenthe inner ends of th e springs :29 and the friction shoes 27 areslidaoly mounted on the rod 24:, spring washers each having an inner hubportion adapted to slide within the slots 25 of the center sills, and aflange 82.

in the structure shown in Figs. and 6,

Wedgi faces the i'redge members 33 are remov'ably attached to the frontand rear followers 18 and 19 by means of a lug andsocket connection 34.These wedge members 33 are each provided with inwardly and horizontallyextending spaced limiting stops 35, similar to the limiting stops 23 ofthe wedges 20. Instead of using a single transverselyarranged rod, as inthe structure shown in the first four figures,'applicant employs twolaterally extending rods 24 longitudinally oldest and each provided withan angular head 36 seated in a similarly formed socket 37 onthe outerface of each of the wedge members 38. These rods 24' pass through holes39 in each of the wedge members provided with a socket 37 and an aliningbolt hole 40 in the opposite wedge member. The rods 24: are furthermoreprovided with draft springs, nuts and washers similar to those showninthe other views. By means of the arrangement shown in Fig. 5, appli;cant provides for double the capacity of the structure shown in thefirst four figures, since by an inward movement of the wedge members 33equal to a corresponding movement of either of the wedges 20, double theamount of compression is producedin each of the springs, as when asingle rod is used. I claim 7 1. in a draft rigging, the combinationwith 'thejdraw-bar, l draw-bar yoke, center sills and stops, offollowers, a wedge, friction shoes each having inclined end friction.-'exterior .throughand an angular socket and bolt hole,

oppositely and laterallyextending rods each having a head socketed inone of the friction shoes and passing through thehole in the other shoe,and a spring and nut on the portion of each rod, snbstantially asspecified.

2. In aodraft rigging, the (ionshination with center sills having slots,of followers,

wedges, friction shoes, laterally extending rods passin being.longltudinally offset, and" springs lfineiunted on said rods,substantially as speci- 3. In' a draft rigging fthe combination "withthe draw-bar, draw-bar yoke, center sills and stops,'of followers,wedges, friction shoes or blockscooperating therewith and adapted tomove transversely and "each having inclined end friction "faces, ofi'setrods each extending" from one .of the frictionshoes and. passing througha hole in "the othershoe, and through a slot in the center sill, .andsprings, substantially as specified. 4. In a draft rigging, thecombination with the draw-bar, draw-bar -yoke, center sills and stops,of followers, wedges, fricposition, substantially as specified. 1

through said slots, saidrods 5. Ina draft rigging, the combination tionshoes or blocks cooperating therewith and adapted to move transverselyand each having inclined end friction faces,- ofi'set rods eachextending from one of the fric tion shoes and passing through a hole in.the other shoe, and through a slot in the center'sill, and springs,said-wedges each being provided with inwardly extending limiting stopspassing 'by said bolts'an adapted to .contact at their extreme-inner.

with the draw-bar, draw baryoke, center vsills and stops, offollowers,wedges, each "wedge having vertical, inclined friction faces, andspaced, horizontally and inwardly projecting upper and lower limitingstops;

-the"stops of one wedge adapted tocontact, those of the other wedge uponan inward;

movement -of either "wedge, friction shoes mounted v rods bein' locatedfloetw'een. thefli'miting stops on t e wedges, 'and 'springs,"snbs'tan-. ti'ally as specified. I 1 Y JOHN" F. O nQR; Witnesses: I

PEARL ABRAMs,

' H. M. MUNDAY.v

longitudinally ofi'set rods, said

